Input validation error in Transmission

1) Input validation error

EUVDB-ID: #VU33839

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-4909

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to read and manipulate data.

Integer overflow in the tr_bitfieldEnsureNthBitAlloced function in bitfield.c in Transmission before 2.84 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a crafted peer message, which triggers an out-of-bounds write.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Transmission: 2.00 - 2.83

External links

http://inertiawar.com/submission.go
http://lists.fedoraproject.org/pipermail/package-announce/2014-July/135539.html
http://lists.opensuse.org/opensuse-updates/2014-08/msg00011.html
http://secunia.com/advisories/59897
http://secunia.com/advisories/60108
http://secunia.com/advisories/60527
http://www.debian.org/security/2014/dsa-2988
http://www.openwall.com/lists/oss-security/2014/07/10/4
http://www.openwall.com/lists/oss-security/2014/07/11/5
http://www.osvdb.org/108997
http://www.securityfocus.com/bid/68487
http://www.ubuntu.com/usn/USN-2279-1
http://bugs.gentoo.org/show_bug.cgi?id=516822
http://bugzilla.redhat.com/show_bug.cgi?id=1118290
http://trac.transmissionbt.com/wiki/Changes#version-2.84
http://twitter.com/benhawkes/statuses/484378151959539712

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.